多螺旋复合箍筋约束混凝土方柱轴压性能有限元分析  

Finite Element Analysis of Axial Compression Performance of Concrete Square Column Confined by Multiple Spiral Composite Stirrup

作　　者：孟和[1] 郭书慧 鱼涛 杨坤[2] MENG He;GUO Shuhui;YU Tao;YANG Kun(Civil&Architecture Engineering,Xi’an Technological University,Xi’an 710021,China;School of Civil Engineering,Chang’an University,Xi’an 710082,China;China MCC5 Group Corp.Ltd.,Chengdu 610063,China)

机构地区：[1]西安工业大学建筑工程学院,西安710021 [2]长安大学建筑工程学院,西安710082 [3]中国五冶集团有限公司,成都610063

出　　处：《西安工业大学学报》2024年第5期625-634,共10页Journal of Xi’an Technological University

基　　金：国家自然科学基金(51708035)。

摘　　要：为了研究新型多螺旋复合箍筋约束混凝土方柱的力学性能,本文在其轴压试验的基础上,采用基于试验提出的约束混凝土本构模型,并利用有限元软件ABAQUS进行数值分析,讨论箍筋间距、箍筋强度、箍筋形式及混凝土强度对约束混凝土方柱轴压性能的影响。结果表明,数值模拟的多螺旋复合箍筋约束混凝土轴压方柱的应力-应变曲线与试验曲线拟合较好,验证了本文所提本构模型的适用性及所建有限元模型的合理性;多螺旋复合箍筋明显提高了约束混凝土方柱的强度和延性性能,约束效果好于传统井字形复合箍筋,且五螺旋复合箍筋的约束效果要好于四螺旋复合箍筋。The paper studies the mechanical properties of concrete square columns confined by multi spiral composite stirrup.In the study,the confined concrete constitutive model proposed based on a test was adopted and the finite element software ABAQUS was used for numerical analysis.The influences of stirrup spacing,stirrup strength,stirrup form and concrete strength on the axial compression performance of confined concrete square columns were discussed.The results indicate that the simulated curves fit well with the experimental curves,verifying the applicability of the proposed constitutive model and the rationality of the finite element model.The multi spiral composite stirrup obviously improves the strength and ductility of the confined concrete square columns,and five spiral composite stirrup has a better effect than four spiral composite stirrup does.

关 键 词：约束混凝土 多螺旋复合箍筋 有限元分析 强度和延性 

分 类 号：TU398.9[建筑科学—结构工程]